Monitor Scan Tool Data

Connect scan tool to Data Link Connector (DLC).
IG "ON".
Select "Diagnostic Trouble Codes (DTCs)" mode, and then Press F4 (DTAL) to check DTC information from the DTCs menu
Confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions noted in the DTC detecting condition.
Read "DTC Status" parameter.

Fig 1: Scan Tool Display - DTC Status Parameter
Courtesy of KIA MOTORS AMERICA, INC.
Is parameter displayed "History (Not Present) fault"?
NOTE:
- History fault: DTC occurred but has been cleared.
- Present fault: DTC is occurring at present time.
YES
- The intermittent fault could be caused by 1st. Clog at sensing hole.
Fig 2: Identifying Sensing Hole
Courtesy of KIA MOTORS AMERICA, INC.

2nd. Poor connection of ECM/PCM connector.

3rd. The previous DTC which has not been cleared after repairing.

So, Thoroughly check above items. And, also check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

NO
- 1st. Check the sensing hole for clog or damage. If there is a problem, repair as necessary.
- 2nd. Substitute with a known-good ECM/PCM and check for proper operation. If the problem is corrected, replace ECM/PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NOTE:
- History fault: DTC occurred but has been cleared.
- Present fault: DTC is occurring at present time.